Feed mechanism for polishing-machines.



No. 821,143. PATENTED MAY'22, 1906. J. D. WALSH. FEED MECHANISM FOR POLISHING MACHINES.

APPLICATION FILED JULY24. 1905.

2 SHEETS-PSHBET 1.

PATENTED MAY 22, 1906. J. n. WALSH.

FEED MECHANISM FOR POLISHING MACHINES.

APPLICATION FILED JULY 24.1905.

2 SHEETS-SHEET 2.

JAMES B. WALSH, @F @T. LOUIS. MlbSQURl.

"FEED MECHANl$l fl FQR POLl$HENG5 WiACHlNE$= Specification of Letters Patent.

ZPatentedIwl'ay 22, race.

Application filed July 24:, 1905. Serial No. 271,027.

T0 at whom it may concern:

Be it known that 1, JAMES D. WALsn, a sub3ect of the King of Great Britain, residing at St. Louis, State of Missouri, have invented certain new and useful Improvements in Feed Mechanism for Polishing-Machines, of which the following is a full, clear, and exact description, reference being had to the ac companying drawings, forming a part hereof.

My invention has relation to improve ments in feed mechanism for pipe-polishing. and similar machines; and it consists in the novel construction and arrangement of parts more fully set forth in the specification and pointed out in the claims.

In the drawings, Figure 1 is a general side elevation of a polishing-machine, showing my invention applied thereto. Fig. 2 is a vertical transverse section on the'line 2 2 of Fig. 1. Fig. 3 is a section on the vertical line 3 3 of Fig. 1. Fig. 4 is a section. on the verti- ,cal line 4 4 of Fig. 1. Fig. 5 is an enlarged elevational detail of the link traveling over the smooth or unthreaded portion of the screw-shaft and of the belt-collar coupled thereto. Fig. 6 is an enlarged horizontal sectional detail of the traveling nut of the link passing over the threaded portion of the screw-shaft. Fig. 7 is a sectional and elevational detail of the adjustable or tail chuck for the pipe. Fig. 8 is an elevational detail of the head-chuck. Fig. 9 is a sectional detail looking up on the line 9 9 of Fig. 1. '10 is a modified chuck for holding solid rods or bars, and Fig. 11 is a cross-section on line 11 11 of Fig. 10.

The object of my invention is to construct an automatic feed mechanismior pipe-polishing machines which will result in a material reduction in the cost of polishing pipes, rods, and similar members; one which will turn out the greatest quantity of work within. given time; one which will polish. a pipe Within a minimum length of time; one which shall be simple, cheap, and reliable, and one possessing further andother advantages better apparent from a detailed description of the invention, which is asi'ollows:

Referring to the drawings, 1 represents an overhead counter-shaft mounted in depending bearings 2 2- and provided with tight passes a belt 5, leading to a line-shaft or any source of driving power. (Not shown.) The belt 5 is controlled by a belt-shifter S of prevailing construction. The shaft 1 is proloose pulleys 3 4, respectively, over which groove on the ring vided with an intermediate pulley 6, from which leads downward a belt '7 to pulley 8 on the shaft 9, which. carries the polishingdisk 10, the shaft 9 being mounted in suitable bearings 11 11 on the standard B. The

counter-shaft 1 is likewise provided with aterminal elongated pulley 12, from which lead the open and cross belts 18 13, respectively, to the loose and tight pulleys 14 15,

carried by the screw or feed-shaft 16, the latter having intermediate bearings 17 at the topof the standard B and terminal bearings 18 at the top of the posts B. The belts 13 13 are controlled by adapted to be jointly brought over the loose pulleys 14: 1 Fig. 1, or one belt over one loose pulley and one tight pulley on either side, as is obvious.

Adapted to travel over the threaded. portion of the screw-shaft 16 is a nut 19,which forms the upper terminal of a swinging link or arm 20, and adapted to travel over the smooth portion. of the screw-shaft is a ring 19, forming the upper terminal of a link or arm 20, the end of the link mediate portion of the link 20 being connected by a channel bar or member 21, the groove. or channel of the bar opening downward. lnsorted into the channel of the bar 21, through the open end adjacent the link 20, is the tongue 22 of an arm 23, which carries the tail-chuck 24:, the latter being provided with a conical chuck-head 25, rotatable about the spindle of the chuck and held thereon by a screw 26, operating in a peripheral groove 27 of the spindle, Fig. 7. The spindle may be retracted at any time suiliciently to release the pipe P, when it returns to engaging position under the action of the coiled spring 28, surrounding the spindle and inter osed between a disk or shoulder 29, carrier thereby, and the end of the arm 23. Passing loosely through the looped end of" the link 20 is the rotatable spindle 24 of the head-chuck, the outer terminal of which is provided with a pulley 30, from which leads a belt 31 over the pulley 3'2, mounted on and feathered to and iree to slide along the smooth portion of the screvwshalt l6, the said pulley terminating in a flange 32, from which project a series of lingers 33, loosely engagniig a peripheral l9", Fig. .5. This speciiic cngagcm ent between the ring 19 and pulley 32 keeps these two members permanently coupled together, traveling as they do in unison along the screw-shaft, as presently to a belt-shifter S, being 20 and. the interbe seen. The inner end of the spindle 24 is supported in a bracket or arm 35, depending from the channel 21, the free end of said spindle terminating in a conical head 25, which wedges itself into the adjacent end of the pipe P, Fig. 8, so that when rotation is imparted to the spindle 24 it will impart rotation to the pipe P, held between the head and tail chucks.

To prevent lateral vibration of the pipe as it is subjected to the abrading action of the polishing-disk 10, I provide an-arm 36, pivoted at the base of the standard B, the free end of the arm being provided with a pair of rollers 37, hearing against the pipe and held yieldingly thereto by a spring 38, which connects an intermediate point of the arm to the standard. Secured to the tongue 22 of the arm 23 is a ti. pct-arm 39, whose distance from the end 0 the tail-chuck carried by the arm 23 is equal to the distance of the disk 10 from the adjacent end of the belt-shifter S, and secured to the ring 19 is a tappet-arm 39. The tongue 22 when once adjusted within the channel bar 21 for any given length of pipe is clamped into position by the screw 40, and the object of having the arm 39 at a constant distance from. the arm 23 and tail-chuck 24-is that it may be at a constant distance from the adjacent end of the pipe irrespective of the length. of the latter, so that the'feed mechanism may reverse itself when the full length of the pipe has been advanced along the polishing-disk.

In Figs. 10, 11, I have shown a tail-chuck 41 and a head lathe-chuck 42 for carrying a solid rod R, intended to be polished, the modified forms of these two pieces niakin them s ecially a plicable for holding soli rods.

f course t e chucks may be varied to suit special purposes.

The operation of the machine may be briefly described as follows: Motion being imparted to the counter-shaft l is transmitted to the disk-shaft 9 and disk 10 through the medium of the belt 7. At the same time the operator shifts the belts 13 13, so as to bring one of the belts over its adjacent tight pulley 15, when the screw-shaft will be rotated in one direction. The screw-shaft in turn imparts rotation to the sliding pulley 32, which in turn through the medium of the belt 31 rotates the spindle 24 of the head-chuck, the latter imparting rotation to the pipe P. As

the screw-shaft 16 rotates, however, it will' fcause the nut 19 to travel over it in one direction, the latter in turn causing the entire channel-bar 21 and the link 20, with its ring- 19 and pulley 32, coupled thereto, to slide along the shaft. The pipe P being in turn suspended from the channel-bar 21 (through the connecting-arm 23 and arm 20) will likewise travel lengthwise, so that as the pipe rotates about its axis to present different oritions of its periphery to the polishing-dis 1t will at the same time travel longitudinally to present its entire length to the disk, (which is stationary.) By the time the end of this longitudinal movement or stroke is reached the tappet-arm 39 will strike the adjacent end of the upper horizontal member of the beltshifter S, shifting the belts 13 13 to the opposite pair of tight and loose pulleys, thus reversing the motion of the screw-shaft, when the parts will travel longitudinally in the opposite direction until the tappet-arm 39 strikes the adjacent end of the belt-shifter S, when the belts 13 13 will again be shifted, bringing the parts in position for another return stroke, and so on indefinitely until the pipe is completely cleaned or polished, the machine being entirely automatic in this particular. Of course with one stroke of the pipe the latter will revolve with the disk and with the opposite stroke against the disk. being that with each reverse rotation imparted to the shaft 16 a reverse rotation is imparted to the sliding pulley 32, which is feathered to the shaft. The pulley 32 being connected to the ring 19 by the fingers 33 it follows that the parts 19 19 21 2O 20' 23 35 3O 31 32 travel as a unit or frame suspended from the shaft 16, the pipe P rotating at the free end of the frame. As the pipe travels longitudinally along the revolving periphery of the disk 10 the s 7 ring 38 allows the arm 36to yield sufficient y and yet prevent any undue lateral vibrations in the pipe.

Having described my invention, what I claim is 1. In combination with a rotating abrading or polishing disk, a screw-shaft, a frame travelingalong the shaft, means on the frame for supporting the article to be polished, and a yieldmg member for pressing the article against the disk during the rotation of the latter, substantially as set forth.

2. In combination with'a rotating abrading or polishing disk, a screw-shaft, a frame for supporting the article to be polished, depending from the shaft and movable longitudinally alon the same, rotation to the screw-shaft, and intermediate connections between the shaft and article to be polished for rotating the latter during the rotation of the disk, and during the longitu dinal travelof the article along said disk, substantially as set forth.

3. In combination with a rotating disk, a rotatable screwshaft, a frame depending therefrom, means for reciprocating the frame along the shaft during the rotation of the latter, suitable rotatable chucks carried by the frame for supporting and rotating the article to be polished, and intermediate connections between the shaft and chucks for imparting rotating to the latter and to the article carried thereby during the reci rocations of the frame, substantially as set orth.

4. In combination with a rotating disk, a

means for imparting "rotatable screw-shaft belt-operated pulleys for the shaft, a belt-shifter for the pulleys, a

frame depending from the shaft and having a nut engaging the threaded portion ereof,

ehucks having rotatable members mounted in the frame for the support ofa pipe or article to be polished, a sliding pulley feathered along the smooth portion of the shaft and rotating therewith, a pulley on the adjacent chuck member, belt connections between said pulley and. the sliding pulley on the opposite I rotation of the screw-shaft at the ends of the shaft, and tappet members or' arms carried at ends of the frame forreversing the longitudinal strokes of the frame, substan-' I i-tially-as set forth.

5. combination with a rotating disk adapted to operate upon a rotatingand lon- .gitudinally-movable article, a spring-controlled arm disposed in the planeof rotation of thedisk and bearing against the article from the opposite side to prevent undue vibration thereof, substantially as set forth.

or the disk from the opposite side and prevent lateral vi- 6. In combination with a rotating disk adapted to operate. upon a rotating and longitudinally movable cylindrical article, a yielding arm disposed in the plane of rotation and bearing against the article bration thereof, and a pair of rollers mounted on the arm and engaging the article, substantially as set forth.

' 7. Incombination with a rotating disk, a rotatable screw-shaft, a frame depending therefrom and adapted to reciprocate along the shaft, a channel-bar forming a member of said frame, an arm having a tongue for insertion into one end of the channel of said bar, a tappet-arm secured to said tongue, a

tail-chuck carried by the arm aforesaid, a head-chuck at the opposite end of said rec 1p-' rocating frame, means for imparting rotation to the head-chuck from the screw-shaft, and in turn to the article held between the chucks, a second tappet-armat the opposlte end of the frame, and reversing mechanism for the shaft controlled by said tappets, substantially as set forth.

8. In combination with a rotating screwshaft having a smooth portion, a frame hav ing portions traveling over the screw-threaded and smooth portions respectively, means for attaching an article to be operated on, to

ticle during the longitudinal travel of the frame along the screw-shaft, substantially as set forth.

In testimony whereof-I afiiX my signature in presence of two witnesses.

. JAMES D. WALSH. Witnesses:

EMIL STAREK, MARY D. WHrrooMB. 

